The new evaluation method of eco products using the eco-efficiency index (Factor X) by consideration of MET

For a sustainable society it has been indispensable that dematerialization and economic growth largely depended on improvement in eco-efficiency. Mitsubishi Electric Corporation is engaged in a balanced reduction of environmental impact based on the concept of MET (effective use of Material and Energy, and evasion of Toxicity) in its manufacturing process and throughout its lifecycle of the product including material procurement and use, recycling and disposal of the product after use. It has adopted a unique calculating method of "Factor X", widely received as an eco-efficiency index of a product. This paper describes the concept of calculation of the product eco-efficiency index and introduces some examples that make the base of the undertakings for DFE (Design For Environment).